Abuse RadarThreat Intelligence

Connecting

Address

104.208.66.100

High 10/15/30d lists

Repeated failed authentication against a web login endpoint from one address, above the measured threshold for that sensor.

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Triage

Risk score

how this score is made up
Risk score67/100
Detection volume+45Sensor corroboration+10Signal class+0Recency+12
Enrichment

Address intelligence

cached
CountryHong KongHK
City / regionHong Kong, Hong Kong, Hong KongAsia/Hong_Kong
NetworkMicrosoft Corporationmicrosoft.com
ASNAS8075
Reverse DNS—
Detections66total observations
Reporting sensors4distinct collectors
First seen2026-10-04 00:51 GMT+85 days ago
Last seen2026-10-04 00:51 GMT+85 days ago
Blocklist window10/15/30d lists
Attribution

Reporting sensors

which collectors observed this address
  • Web Sensor 0233 observations · last 2026-10-04 00:51 GMT+8Web
  • Web Sensor 0333 observations · last 2026-10-04 00:51 GMT+8Web
Sensor names are anonymised. Collector hostnames and log contents are never published.
Signals

Observation history

2 signal records
  • Suspicious web authentication attemptsHighWeb attack
    16 detections from 2 sensors · first seen 2026-10-04 00:51 GMT+8 · last seen 2026-10-04 00:51 GMT+8 (5 days ago) · active

    Repeated failed authentication against a web login endpoint from one address, above the measured threshold for that sensor.

  • Automated web path enumerationHighWeb attack
    50 detections from 2 sensors · first seen 2026-10-04 00:51 GMT+8 · last seen 2026-10-04 00:51 GMT+8 (5 days ago) · active

    One address requesting many distinct non-existent paths in a short window - the shape of an automated scanner rather than a person.

Correlation1 multi-signal, 11 single-signal

Addresses sharing an observed attribute with this one. Arrival proximity uses a ±30 minute window around first observation.

Showing the 12 strongest of 237 related addresses, ranked by how much each shared value narrows the field.

  • 20.210.128.125Multi-signal

    AS8075 Observed across 1 minutes, 66 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    • Same reasonweb_auth_abuseSuspicious web authentication attemptsweb_auth_abuse appears on 22 observations (0.3% of the corpus).distinguishing
    • Same reasonweb_scanner_enumerationAutomated web path enumerationweb_scanner_enumeration appears on 211 observations (2.8% of the corpus).distinguishing
    Open address
  • 45.148.10.119Single-signal

    AS48090 Observed across 3 days, 58 detections recorded.

    • Same reasonweb_auth_abuseSuspicious web authentication attemptsweb_auth_abuse appears on 22 observations (0.3% of the corpus).distinguishing
    • Same reasonweb_scanner_enumerationAutomated web path enumerationweb_scanner_enumeration appears on 211 observations (2.8% of the corpus).distinguishing
    Open address
  • 45.148.10.201Single-signal

    AS48090 Observed across 3 minutes, 83 detections recorded.

    • Same reasonweb_auth_abuseSuspicious web authentication attemptsweb_auth_abuse appears on 22 observations (0.3% of the corpus).distinguishing
    • Same reasonweb_scanner_enumerationAutomated web path enumerationweb_scanner_enumeration appears on 211 observations (2.8% of the corpus).distinguishing
    Open address
  • 172.191.74.151Single-signal

    AS8075 Observed across 134 days, 5 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 57.153.8.89Single-signal

    AS8075 Observed in a single observation window.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 13.68.214.34Single-signal

    AS8075 Observed across 118 days, 5 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 20.46.45.121Single-signal

    AS8075 Observed across 124 days, 5 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 48.211.41.34Single-signal

    AS8075 Observed across 113 days, 3 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 20.75.217.64Single-signal

    AS8075 Observed in a single observation window.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 51.42.72.34Single-signal

    AS8075 Observed across 18 days, 2 detections recorded.

    • Same ASNAS8075Microsoft CorporationAS8075 holds 9 observed addresses (0.2% of geolocated observations).distinguishing
    Open address
  • 91.194.91.202Single-signal

    AS51167 Observed in a single observation window.

    • Same reasonweb_auth_abuseSuspicious web authentication attemptsweb_auth_abuse appears on 22 observations (0.3% of the corpus).distinguishing
    Open address
  • 45.138.12.43Single-signal

    AS218785 Observed in a single observation window.

    • Same reasonweb_auth_abuseSuspicious web authentication attemptsweb_auth_abuse appears on 22 observations (0.3% of the corpus).distinguishing
    Open address

These are shared observations, not attribution. Abuse Radar does not claim common ownership, operation, coordination or intent between these addresses.

Abuse Radar publishes sanitized indicators only. Severity is a triage hint computed from detection volume, sensor corroboration, signal class and recency — it is not an attribution claim. See methodology.